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    <title>Document</title>
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<body>
    <script>

        let arr = ['吃饭', '睡觉', '烫头', '打豆豆'];

        //1.遍历数组，直接遍历
        console.log(arr[0]);
        console.log(arr[1]);
        console.log(arr[2]);
        console.log(arr[3]);

        //2.for 循环,遍历索引号
        for (let i = 0; i < 4; i++) {
            console.log(arr[i]);
        }

                                                                                                                                                                                                                               

        // 3. 数组的长度作为计数器
        for (let i = 0; i < arr.length; i++) {
            console.log(arr[i]);
        }
    </script>
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